G-Cat 5.7 What Fits HELP

I have and old 5.7 and I need to find some sails for it . What other boats out there are about the same size that would work on the G-cat 5.7 .Have not had much luck finding anything so far

Ko51
The Prindle 18 main sail is a dead on match. The G-cat jib is slightly larger than the P-18 jib but not enough to make a real difference on the water. The P-18 jib won't be long enough to tack down at the front beam where the tack of the original G-cat jib goes. I owned both boats and interchanged the sails all the time.

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